Aeration tank for sewage treatment plant based on aeration fan

Abstract

An aeration tank for a sewage treatment plant based on an aeration fan comprises a tank body, a column tube is integrally formed in the middle position of the tank body, an aeration ring groove is formed between the inner wall of the tank body and the outer wall of the column tube, a lower through-flow pipe and an upper through-flow pipe are arranged on the outside of the tank body, and an aeration conveying member is arranged below the outside of the tank body, an inner ring tube connected to the aeration conveying member is arranged at the bottom end of the aeration ring groove, and a plurality of pairs of aeration members are arranged at equal distances along the circumferential direction on the top of the inner ring tube, and the aeration member comprises two symmetrically arranged jet pipes, the middle position of the bottom of the jet pipe and the inner ring pipe are both rotatably connected through a connecting member, a plurality of aeration heads are evenly arranged on the top of the jet pipe, and a driving member for driving the symmetrically arranged jet pipes to cyclically swing is arranged inside the column tube. When the two jet pipes in the present invention swing, the aeration head can be displaced in the sewage during the aeration process, thereby increasing the aeration range of the sewage and effectively increasing the sewage treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sewage aeration treatment, and in particular to an aeration tank of a sewage treatment plant based on an aeration fan. Background Art

[0002] Aeration tanks are biochemical reactors designed according to the characteristics of microorganisms. The degree of degradation of organic pollutants mainly depends on the aeration reaction conditions designed by humans.

[0003] The aeration tank uses the activated sludge method to treat sewage. The tank provides a certain sewage retention time to meet the oxygen required by aerobic microorganisms and the mixing conditions for full contact between sewage and activated sludge. It is mainly composed of three parts: the tank body, the aeration system, and the inlet and outlet.

[0004] In the prior art, a Chinese patent application numbered CN201922383654.8 discloses an aeration tank aeration device for sewage treatment, which drives the agitator shaft and agitator blades to rotate through a stirring motor, and increases the contact area between water and air by mechanical stirring. The stirring radius can be changed during stirring, which effectively enhances the sewage treatment effect. The aeration holes opened in the outer ring aeration pipe, the inner ring aeration pipe and the connecting aeration pipe can allow the air to be evenly distributed into the aeration tank, and can effectively achieve the mixing of oxygen and activated sludge.

[0005] However, the aeration heads in the aeration system of the aeration tank in the prior art are all positioned and installed, and cannot be displaced in the sewage during the aeration process. The sewage aeration orientation is fixed, which greatly reduces the sewage aeration range and reduces the sewage treatment efficiency. Based on this, an aeration tank for a sewage treatment plant based on an aeration fan is proposed. Summary of the invention

[0006] The main purpose of the present invention is to propose an aeration tank for a sewage treatment plant based on an aeration fan, aiming to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the present invention proposes an aeration tank for a sewage treatment plant based on an aeration fan, comprising a tank body, a column tube integrally formed at the middle position inside the tank body, an aeration ring groove formed between the inner wall of the tank body and the outer wall of the column tube, a lower flow pipe and an upper flow pipe are arranged on the outside of the tank body, and an aeration conveying member is arranged at the lower outer side of the tank body, an inner ring tube connected to the aeration conveying member is arranged at the bottom end of the aeration ring groove, and a plurality of pairs of aeration members are arranged at equal distances along the circumferential direction on the top of the inner ring tube, the aeration member comprises two symmetrically arranged jet pipes, the middle position of the bottom of the jet pipe is rotatably connected to the inner ring pipe through a connecting member, a plurality of aeration heads are evenly arranged on the top of the jet pipe, and a driving member for driving the symmetrically arranged jet pipes to cyclically swing is arranged inside the column tube.

[0008] Preferably, the aeration conveying member comprises an outer ring tube fixedly mounted on the outside of the bottom of the pool body, a plurality of aeration fans connected to the inside of the outer ring tube are equidistantly mounted on the outer wall of the pool body, and the outer ring tube is connected to the inner ring tube via a plurality of air delivery pipes.

[0009] Preferably, the driving member includes a main air cylinder fixedly installed inside the column tube by a mounting frame, a plurality of vent holes are evenly arranged on the top of the main air cylinder, and an electric push rod is installed in the middle position of the top end of the main air cylinder, the telescopic end of the electric push rod extends into the inside of the main air cylinder and a sealing push plate is fixedly installed on the end, the sealing push plate is in sealing and sliding cooperation with the inner wall of the main air cylinder, a plurality of sub-air cylinders are installed in communication with the outer wall of the bottom of the main air cylinder, and piston heads are sealingly and slidably arranged inside the sub-air cylinders, and a driving main rod is fixedly connected to one end of the piston head away from the main air cylinder, the driving main rod respectively passes through the sub-air cylinder and the column tube and the end is fixedly connected to a connecting piece, two driving connecting rods are symmetrically and rotatably installed on one side of the connecting piece, the two driving connecting rods are respectively rotatably connected to the bottom ends of adjacent injection pipe ends, a ventilation gap is left between the driving main rod and the end opening of the sub-air cylinder, and the driving main rod and the column tube are in sealing and sliding cooperation.

[0010] Preferably, a pushing member is provided inside the aeration ring groove formed between the inner wall of the tank body and the outer wall of the column tube for pushing the sewage inside the aeration ring groove.

[0011] Preferably, the pushing member includes a mounting seat fixedly installed on the top of the column tube, a top ring plate is installed on the top of the mounting seat through a sliding member, a driving mechanism is arranged on the inner side of the top ring plate, a side ring plate is integrally formed on the outer side of the top ring plate, a plurality of driving frames are welded at equal distances on the outer side of the side ring plate, an upper push plate is vertically installed on the bottom of the driving frame, a lower push plate is obliquely arranged below the upper push plate with a flow gap left between them, and the bottom of the lower push plate is arranged in a blade shape.

[0012] Preferably, the driving mechanism includes a motor fixedly mounted on the top of the mounting seat, a driving gear fixedly mounted on the end of the motor output shaft, an inner ring tooth is integrally formed on the inner edge of the top ring plate, the driving gear is meshed with the inner ring tooth, and the inner ring tooth and the side ring plate are respectively welded to the outer wall of the U-sliding sleeve seat.

[0013] Preferably, the sliding member includes annular grooves arranged on the inner and outer sides of the mounting seat, and a plurality of U-sleeve seats are equidistantly slidably sleeved on the top of the mounting seat. The U-sleeve seats are slidably matched with the annular grooves, and the top ring plate is fixedly installed on the top of the plurality of U-sleeve seats. A ring rail is fixedly installed on the top of the mounting seat, and a rail wheel is rotatably installed on the inner side of the U-sleeve seat through a wheel frame, and the plurality of rail wheels are jointly seated on the ring rail.

[0014] Preferably, the two ends of the lower push plate are connected to the upper push plate by a connecting plate, a rotating shaft is rotatably installed between the two connecting plates, a plurality of sleeves are equidistantly installed on the outside of the rotating shaft, and a plurality of bending plates are installed on the outside of the sleeves.

[0015] Preferably, a plurality of puncturing portions are provided on the top of the upper push plate away from the lower push plate, the puncturing portions are slats horizontally connected to the side wall of the upper push plate, and sharp corner nails are evenly provided at the bottom ends of the slats.

[0016] Preferably, a lifting ring is provided at the bottom end of the pool body at a position corresponding to the inner ring tube, and the inner ring tube is fixedly mounted on the top of the lifting ring by a plurality of buckles.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] (1) By providing an aeration conveying member, gas injection can be performed into the inner ring tube. Meanwhile, by providing a connecting member and an air injection pipe, the gas inside the inner ring tube can be transported to multiple aeration heads for spraying, thereby aeration treatment is performed in the sewage;

[0019] (2) The present invention is provided with a mounting frame, so that the main gas cylinder can be stably installed inside the column tube, and by providing an electric push rod and a vent hole, the sealing push plate can be driven to move inside the main gas cylinder, so that the gas inside the main gas cylinder is pushed into the multiple gas sub-cylinders, and the piston head is driven to drive the main rod to drive the connecting member to move, so that the two driving connecting rods drive the two adjacent injection pipes to swing, so that the aeration head can be displaced in the sewage during the aeration process, thereby increasing the sewage aeration range and effectively increasing the sewage treatment efficiency. At the same time, when the electric push rod is extended and retracted back and forth, it will drive the injection pipe to swing repeatedly in a cycle, effectively improving the flexibility of aeration;

[0020] (3) By providing a pushing member, the sewage inside the aeration ring groove can be pushed for treatment, thereby further increasing the aeration treatment effect of the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of an aeration tank in a sewage treatment plant based on an aeration fan proposed by the present invention;

[0023] Figure 2 A cross-sectional view of an aeration tank in a sewage treatment plant based on an aeration fan proposed by the present invention;

[0024] Figure 3 for Figure 2 Schematic diagram of the partial organization split structure;

[0025] Figure 4A cross-sectional view of a column tube of an aeration tank in a sewage treatment plant based on an aeration fan proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the disassembled structure of the sliding parts of the aeration tank of a sewage treatment plant based on the aeration fan proposed by the present invention;

[0027] Figure 6 for Figure 3 Schematic diagram of some structures;

[0028] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0029] Figure 8 It is a schematic diagram of the structure of the driving member in the present invention;

[0030] Fig. 9 for Figure 8 The middle part of the structure is sectional view;

[0031] Fig.10 It is a schematic diagram of the connection between the lifting ring and the buckle in the present invention;

[0032] Fig.11 for Figure 8 Schematic diagram of part of the structure.

[0033] Explanation of the accompanying figures: 1. Tank body; 2. Aeration fan; 3. Air pipe; 4. Outer ring pipe; 5. Lower flow pipe; 6. Upper flow pipe; 7. Side ring plate; 8. Inner ring gear; 9. Top ring plate; 10. Drive frame; 11. Mounting seat; 12. Upper push plate; 13. Column pipe; 14. Inner ring pipe; 15. Aeration head; 16. Lower push plate; 17. Connecting plate; 18. Jet pipe; 19. Drive gear; 20. Motor; 21. Ring rail; 22. Ring Groove; 23, rail wheel; 24, U-sliding sleeve seat; 25, wheel frame; 26, bending plate; 27, bushing; 28, rotating shaft; 29, slats; 30, pointed nails; 31, electric push rod; 32, main air cylinder; 33, mounting frame; 34, lifting ring; 35, piston head; 36, driving connecting rod; 37, driving main rod; 38, vent hole; 39, air distributor; 40, sealing push plate; 41, connecting piece; 42, buckle; 43, connecting piece. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] like Figure 1-Figure 11 The aeration tank of a sewage treatment plant based on an aeration fan shown in the figure comprises a tank body 1, a column tube 13 is integrally formed in the middle position inside the tank body 1, an aeration ring groove is formed between the inner wall of the tank body 1 and the outer wall of the column tube 13, a lower flow pipe 5 and an upper flow pipe 6 are arranged on the outer side of the tank body 1, which belong to the water inlet and outlet of the prior art and are not elaborated in detail, and an aeration conveying member is arranged at the lower side of the outer side of the tank body 1, the aeration conveying member comprises an outer ring tube 4 fixedly mounted on the outer side of the bottom of the tank body 1, an outer wall of the tank body 1, etc. A plurality of aeration fans 2 connected to the interior of the outer ring tube 4 are installed at a distance, the outer ring tube 4 is connected to the inner ring tube 14 through a plurality of air delivery pipes 3, an inner ring tube 14 connected to the aeration conveying element is arranged at the bottom end of the aeration ring groove, and a plurality of pairs of aeration elements are arranged at equal distances along the circumferential direction on the top of the inner ring tube 14; by arranging a plurality of aeration fans 2, external air can be quickly transported to the interior of the outer ring tube 4, and then passed into the interior of the inner ring tube 14, and the sewage can be aerated through a plurality of pairs of aeration elements.

[0037] A lifting ring 34 is provided at the bottom end of the pool body 1 at the corresponding position of the inner ring tube 14, and the inner ring tube 14 is fixedly mounted on the top of the lifting ring 34 by multiple clips 42; by providing the lifting ring 34 and multiple clips 42, the inner ring tube 14 can be stably mounted on the bottom end of the pool body 1, thereby having a positioning effect on the inner ring tube 14.

[0038] The aeration member includes two symmetrically arranged air jet pipes 18, the middle position of the bottom of the air jet pipe 18 is rotatably connected to the inner ring pipe 14 through a connecting member 43, a plurality of aeration heads 15 are evenly arranged on the top of the air jet pipe 18, a driving member for driving the symmetrically arranged air jet pipes 18 to cyclically swing is arranged inside the column pipe 13, the driving member includes a main air cylinder 32 fixedly installed inside the column pipe 13 through a mounting frame 33, a plurality of vents 38 are evenly arranged on the top of the main air cylinder 32, and a middle position at the top of the main air cylinder 32 An electric push rod 31 is installed, and the telescopic end of the electric push rod 31 extends to the inside of the main air cylinder 32 and a sealing push plate 40 is fixedly installed at the end. The sealing push plate 40 is in sealing and sliding cooperation with the inner wall of the main air cylinder 32. A plurality of air distribution cylinders 39 are connected and installed on the outer wall of the bottom of the main air cylinder 32. A piston head 35 is sealed and slidably arranged inside the air distribution cylinder 39. The end of the piston head 35 away from the main air cylinder 32 is fixedly connected to a driving main rod 37. The driving main rod 37 passes through the air distribution cylinder 39 and the column tube 13 respectively, and the end is fixedly connected to the connecting piece 41, two driving connecting rods 36 are symmetrically rotatably installed on one side of the connecting member 41, and the two driving connecting rods 36 are respectively rotatably connected to the bottom ends of the adjacent injection pipes 18, and a ventilation gap is left between the driving main rod 37 and the end opening of the gas distribution cylinder 39, and the driving main rod 37 and the column tube 13 are sealed and slidably matched; by setting the mounting frame 33, the main gas cylinder 32 can be stably installed inside the column tube 13, and by setting the electric push rod 31 and the vent hole 38, the sealing push plate 40 can be driven to move in the main gas cylinder 32. The cylinder 32 moves inside, thereby pushing the internal gas of the main cylinder 32 into the multiple gas distribution cylinders 39, driving the piston head 35 to drive the driving main rod 37 to drive the connecting piece 41 to move, so that the two driving connecting rods 36 drive the two adjacent injection pipes 18 to swing, so that the aeration head can be displaced in the sewage during the aeration process, thereby increasing the sewage aeration range and effectively increasing the sewage treatment efficiency. In addition, when the electric push rod 31 is extended and retracted back and forth, it will drive the injection pipe 18 to swing repeatedly in a cycle, effectively improving the flexibility of aeration.

[0039] A pushing member is provided inside the aeration ring groove, and the pushing member includes a mounting seat 11 fixedly installed on the top of the column tube 13, a top ring plate 9 is installed on the top of the mounting seat 11 through a sliding member, and a driving mechanism is provided on the inner side of the top ring plate 9, and the driving mechanism includes a motor 20 fixedly installed on the top of the mounting seat 11, and a driving gear 19 is fixedly installed on the end of the output shaft of the motor 20. An inner ring tooth 8 is integrally formed on the inner edge of the top ring plate 9, and the driving gear 19 is meshed with the inner ring tooth 8. The inner ring tooth 8 and the side ring plate 7 are respectively welded to the outer wall of the U sliding sleeve seat 24, and a side ring plate 7 is integrally formed on the outer side of the top ring plate 9. A plurality of driving frames 10 are welded at equal distances on the outer side of the side ring plate 7, and an upper push plate 12 is vertically installed at the bottom of the driving frame 10, and a lower push plate 16 is obliquely arranged below the upper push plate 12 with a flow gap left between them, and connecting plates are provided between the two ends of the lower push plate 16 and the upper push plate 12 17 is connected, a rotating shaft 28 is rotatably installed between the two connecting plates 17, a plurality of shaft sleeves 27 are equidistantly installed on the outside of the rotating shaft 28, a plurality of bending plates 26 are installed on the outside of the shaft sleeves 27, and the bottom of the lower push plate 16 is set in a blade shape; by starting the motor 20, the top ring plate 9 will drive the side ring plate 7 to rotate under the cooperation of the sliding member and the driving gear 19 and the inner ring gear 8, so that the driving frame 10 drives the upper push plate 12, the connecting plate 17 and the lower push plate 16 to push the sewage inside the aeration ring groove, further increasing the aeration treatment effect of the sewage, and the bottom of the lower push plate 16 is set in a blade shape, so that the bubbles generated by aeration in the sewage can be cut, and the rotating shaft 28, the shaft sleeve 27 and the bending plate 26 set at the same time will rotate under the action of water thrust, so as to break up the bubbles in the sewage again and increase the contact between the bubbles and the sewage.

[0040] The sliding part includes an annular groove 22 arranged on the inner and outer sides of the mounting seat 11, and a plurality of U-sleeve seats 24 are equidistantly slidably sleeved on the top of the mounting seat 11, and the U-sleeve seats 24 are slidably matched with the annular groove 22. The top ring plate 9 is fixedly installed on the top of the plurality of U-sleeve seats 24, and an annular rail 21 is fixedly installed on the top of the mounting seat 11. A rail wheel 23 is rotatably installed on the inner side of the U-sleeve seat 24 through a wheel frame 25, and a plurality of rail wheels 23 are jointly seated on the annular rail 21; by setting the annular groove 22, the U-sleeve seat 24 can be stably sleeved on the top of the mounting seat 11, and the annular rail 21, rail wheel 23 and wheel frame 25 are set at the same time, so that the stability of the U-sleeve seat 24 during the sliding process can be improved.

[0041] A plurality of puncturing portions are provided on the top of the side of the upper push plate 12 away from the lower push plate 16. The puncturing portions are slats 29 horizontally connected to the side wall of the upper push plate 12, and sharp corner nails 30 are evenly provided at the bottom ends of the slats 29. By providing the slats 29, the sharp corner nails 30 can be installed, and the provided sharp corner nails 30 can puncture the bubbles generated by aeration in the sewage, thereby causing explosions.

[0042] Working method: First, the aeration conveyor is started to inject gas into the inner ring tube 14, and at the same time, the gas inside the inner ring tube 14 is transported to the multiple aeration heads 15 through the connecting piece 43 and the jet pipe 18 to spray out, so as to aerate the sewage, and the main air cylinder 32 is stably installed inside the column tube 13 under the action of the mounting frame 33, and the electric push rod 31 is started, and the sealing push plate 40 is driven to move inside the main air cylinder 32 with the cooperation of the vent hole 38, so as to push the gas inside the main air cylinder 32 into the multiple air distribution cylinders 39, and drive the active The plug 35 pushes the driving main rod 37 to drive the connecting piece 41 to move, causing the two driving connecting rods 36 to drive the two adjacent jet pipes 18 to swing, so that the aeration head can be displaced in the sewage during the aeration process, thereby increasing the aeration range of the sewage and effectively increasing the sewage treatment efficiency. At the same time, when the electric push rod 31 is extended and retracted back and forth, the jet pipe 18 will be driven to swing repeatedly in a cycle, effectively improving the flexibility of aeration, and at the same time, the pushing piece is started to push the sewage inside the aeration ring groove for treatment, thereby further increasing the aeration treatment effect of the sewage.

[0043] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An aeration tank for a sewage treatment plant based on an aeration fan, characterized in that: The invention comprises a tank body (1), wherein a column tube (13) is integrally formed in the middle position of the tank body (1), an aeration ring groove is formed between the inner wall of the tank body (1) and the outer wall of the column tube (13), a lower flow tube (5) and an upper flow tube (6) are arranged on the outer side of the tank body (1), and an aeration conveying member is arranged below the outer side of the tank body (1), an inner ring tube (14) connected to the aeration conveying member is arranged at the bottom end of the aeration ring groove, and a plurality of pairs of aeration members are arranged at equal distances on the top of the inner ring tube (14) along the circumferential direction, the aeration members comprise two symmetrically arranged jet pipes (18), the middle position of the bottom of the jet pipe (18) and the inner ring pipe (14) are both rotatably connected and connected via a connecting member (43), a plurality of aeration heads (15) are evenly arranged on the top of the jet pipe (18), and a driving member for driving the symmetrically arranged jet pipes (18) to cyclically swing is arranged inside the column tube (13); A pushing member is arranged inside an aeration ring groove formed between the inner wall of the tank body (1) and the outer wall of the column tube (13) for pushing sewage inside the aeration ring groove; the pushing member comprises a mounting seat (11) fixedly mounted on the top end of the column tube (13); a top ring plate (9) is mounted on the top of the mounting seat (11) via a sliding member; a driving mechanism is arranged on the inner side of the top ring plate (9); a side ring plate (7) is integrally formed on the outer side of the top ring plate (9); a plurality of driving frames (10) are welded at equal distances on the outer side of the side ring plate (7); and the driving frames (10) are arranged on the outer side of the side ring plate (7). (10) An upper push plate (12) is vertically installed at the bottom, a lower push plate (16) is obliquely arranged below the upper push plate (12) and a flow gap is left between them, and the bottom of the lower push plate (16) is arranged in a blade shape; the two ends of the lower push plate (16) are connected to the upper push plate (12) through a connecting plate (17), a rotating shaft (28) is rotatably installed between the two connecting plates (17), a plurality of shaft sleeves (27) are equidistantly installed on the outside of the rotating shaft (28), and a plurality of bending plates (26) are installed on the outside of the shaft sleeves (27).

2. The aeration tank of a sewage treatment plant based on an aeration fan as claimed in claim 1, characterized in that: The aeration conveying member comprises an outer ring pipe (4) fixedly mounted on the outside of the bottom of the tank body (1); a plurality of aeration fans (2) connected to the inside of the outer ring pipe (4) are installed at equal distances on the outer wall of the tank body (1); and the outer ring pipe (4) and the inner ring pipe (14) are connected via a plurality of air delivery pipes (3).

3. The aeration tank of a sewage treatment plant based on an aeration fan as claimed in claim 1, characterized in that: The driving member comprises a main air cylinder (32) fixedly mounted inside the column tube (13) through a mounting frame (33), a plurality of vent holes (38) are evenly arranged on the top of the main air cylinder (32), and an electric push rod (31) is installed at the middle position of the top of the main air cylinder (32), the telescopic end of the electric push rod (31) extends into the inside of the main air cylinder (32) and a sealing push plate (40) is fixedly mounted on the end, the sealing push plate (40) is sealingly slidably matched with the inner wall of the main air cylinder (32), a plurality of air distribution cylinders (39) are installed in communication with the outer wall of the bottom of the main air cylinder (32), and the air distribution cylinders (39) are all sealingly slidably arranged inside The piston head (35) has one end of the piston head (35) which is away from the main gas cylinder (32) and is fixedly connected to a driving main rod (37). The driving main rod (37) passes through the gas distribution cylinder (39) and the column tube (13) respectively and the end thereof is fixedly connected to a connecting piece (41). Two driving connecting rods (36) are symmetrically rotatably mounted on one side of the connecting piece (41). The two driving connecting rods (36) are respectively rotatably connected to the bottom ends of the adjacent gas injection pipes (18). A ventilation gap is left between the driving main rod (37) and the end opening of the gas distribution cylinder (39), and the driving main rod (37) and the column tube (13) are sealed and slidably matched.

4. The aeration tank of a sewage treatment plant based on an aeration fan as claimed in claim 1, characterized in that: The driving mechanism comprises a motor (20) fixedly mounted on the top of a mounting seat (11); a driving gear (19) is fixedly mounted on the end of an output shaft of the motor (20); an inner ring tooth (8) is integrally formed on the inner edge of the top ring plate (9); the driving gear (19) meshes with the inner ring tooth (8); and the inner ring tooth (8) and the side ring plate (7) are respectively welded to the outer wall of a U-shaped sliding sleeve seat (24).

5. The aeration tank of a sewage treatment plant based on an aeration fan as claimed in claim 1, characterized in that: The sliding member comprises an annular groove (22) arranged inside and outside the mounting seat (11); a plurality of U-sliding sleeve seats (24) are equidistantly slidably sleeved on the top of the mounting seat (11); the U-sliding sleeve seats (24) are slidably matched with the annular groove (22); a top ring plate (9) is fixedly mounted on the top of the plurality of U-sliding sleeve seats (24); a ring rail (21) is fixedly mounted on the top of the mounting seat (11); a rail wheel (23) is rotatably mounted on the inner side of the U-sliding sleeve seat (24) via a wheel frame (25); and the plurality of rail wheels (23) are seated on the annular rail (21) together.

6. The aeration tank of a sewage treatment plant based on an aeration fan as claimed in claim 1, characterized in that: A plurality of puncturing parts are arranged on the top of one side of the upper push plate (12) away from the lower push plate (16), wherein the puncturing parts are strips (29) horizontally connected to the side wall of the upper push plate (12), and sharp corner nails (30) are evenly arranged at the bottom ends of the strips (29).

7. The aeration tank of a sewage treatment plant based on an aeration fan as claimed in claim 1, characterized in that: A lifting ring (34) is provided at the inner bottom end of the pool body (1) at a position corresponding to the inner ring tube (14), and the inner ring tube (14) is fixedly clamped on the top end of the lifting ring (34) through a plurality of buckles (42).

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